ISSN: 0973-7510

E-ISSN: 2581-690X

Research Article | Open Access
Albayrak Seyda1, Genc Berna2, Ozkan Hakan1, Taskin Mesut1 , and Adiguzel Ahmet1 
1Department of Molecular Biology and Genetics, Faculty of Science, Ataturk University, Erzurum – 25240, Turkey.
2Department of Genetic and Bioengineering, Faculty of Engineering and Life Sciences, Gumushane University, Gumushane – 29100, Turkey.
J Pure Appl Microbiol, 2019, 13 (3): 1375-1387 | Article Number: 5676
https://doi.org/10.22207/JPAM.13.3.08 | © The Author(s). 2019
Received: 11/06/2019 | Accepted: 05/07/2019 | Published: 17/07/2019
Abstract

In this study, one hundred and thirty isolates were isolated from water and sludge samples taken from hot springs located in different regions of Turkey. Among them, eleven isolates were chosen according to conventional (morphological, physiological and biochemical tests) and molecular methods (rep-PCR and 16S rRNA sequencing). These bacteria were then tested for their capability to produce valuable enzymes. As a result; species belonging to Bacillus, Anoxybacillus, Aeribacillus, Enterococcus, Exiguobacterium and Paenibacillus were identified. Test strains were found to have optimum reproductive potential at pH 5.0-9.0 and 15-65°C, usually at a concentration of 1.0-10.0% (w/v) NaCl. In addition, all thermo-tolerant bacteria were Gram, endospore (except E. profundum), catalase and oxidase (except E. faecium and E. profundum) positive, and rod-shaped (except E. faecium). It was observed that all isolates had a 99% similarity percentage as a result of 16S rRNA sequence analysis. All of the isolates were capable of producing industrially important enzymes moreover, eight of them could produce at least two of these enzymes. Test strains had high potential of industrial enzyme production, and the enzymes from these thermo-tolerant isolates will be widely used in biotechnological processes.

Keywords

Thermo-tolerant, isolation, 16S rRNA, rep-PCR, industrial enzymes.

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© The Author(s) 2019. Open Access. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License which permits unrestricted use, sharing, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.